Stirring device for calcining-furnaces



(No Model.) 2 SheetsSheet 1.

A H WETHEY STIRRING DEVICE FOR GALGINING FURNACES.

No. 565,313. Patented Aug. 4, 1896.

/NV1 5NTO/? BY J M M/v 0% ATTORNEYS.

/ W/TNESSES" 2 SheetsSheet 2.

(No Model.)

A H WETHEY I STIRRING DEVICE FOR GALGINING FURNAGES. No. 565,313.

Patented Aug. 4

INVENTOI'? WITNESSES )1 TTORNEYS.

UNITED STATES PATENT OFFICE.

ARTHUR HARVEY WVETHEY, OF BUTTE, MONTANA.

STIRRING DEVICE FOR CALClNlNG-FURNACES.

SPECIFICATION forming part of Letters Patent No. 565,313, dated August4, 1896. Application filed February 15, 1895. Serial No. 538,508. (Nomodel.)

To all whom it may concern.-

Be it known that I, ARTHUR HARVEY \VETHEY, of Butte, in the county ofSilver Bow and State of Montana, have invented a new and ImprovedStirring Device for CalciningFurnaces, of which the following is a full,clear, and exact description.

The invention consists principally of a carriage mounted to travel andsupporting an axle carrying a series of shovels or plows.

The invention consists in certain parts and details and combinations ofthe same, as will be hereinafter fully described, and then pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the views.

Figure l is a side elevation of the improvement as applied on a doublefurnace shown in cross-section. Fig. 2 is a plan view of theimprovement. Fig. 3 is a side elevation of a shoe for opening the doors.Fig. 4 is a side elevation of the carriage connecting-plate. Fig. 5 isan enlarged side elevation of one of the carriage-clamps for therail-and-chain connection. Fig. 6 is an enlarged transverse section ofone of the shovel-supports, the section being taken on the line 6 6 ofFig. 7..

Fig. '7 is a plan of thesame. Fig. 8 is an enlarged face view of theplow-coupling. Fig. 9 is a sectional side elevation of the same, on theline 9 9 of Fig. 8; and Fig. 10 is a plan view of the same.

The device is applied on furnaces A A, of a construction shown in detailin the application above referred to, so that further description of thesame is not deemed necessary, it being sufficient to state that thefurnaces are arranged opposite each other, and each is provided with aseries of compartments located one above the'other. On the inner sidesof the furnaces A A, for each pair of compartments, are arranged thelongitudinally-extending I-beams B and B, respectively, supporting atthe top the rails D and 1), respectively, on which are mounted to travelthe wheels E and E, respectively, of a carriage F extending between thetwo furnaces, as plainly shown in the drawings, the said carriagesupporting the shovels or plows extending into the compartments, ashereinafter more fully described.

The carriage F is provided with two parallel square bars F, connectedwith each other at their ends by the connecting-plates F and F carryingthe wheels E and E, respectively. The bars F are connected by chain-'clamps (see Fig. 5) to the adjacent links G of the chains G for pullingthe carriage along in the manner more fully described in the applicationabove referred to, it being understood that the chains, being endless,can receive a traveling motion by a suitable mechanism. The inner endsof the links G are connected with a plate G2 by bolts G so that thecarriage can readily pass over the rails at the ends of the furnaces, asindicated in the application mentioned. The bars F also support, at ornear their middle, a shoe H, forming part of the device for opening andclosing the doors, as shown and described in an application for LettersPatent of even date herewith, Serial No. 538,506.

On each of the connecting-plates F is fastened by bolts J a coupling I,having a reduced portion I, provided with projections 1, extendingforward and rearward, Figs. 8 and 10, the coupling terminating in athreaded part 1 adapted to abut against a similar end portion of a tubeP, extending transversely into the respective compartments of thefurnace A or A, the said tube forming a support for the plows K, securedthereto. The connection between the couplings I and the tubes orsupports P is made by means of ordinary internally-threaded sleeves orunions L, Figs. 1 and 2, fitting over the screwthreaded end of saidcouplings and supports. Each plow K, as shown in detail in Figs. (3 and7, is formed with the two flanges K and K connected with each otherbybolts K so as to be readily fitted onto the tube P. The shoulders Kand K of the flanges K and K are adapted to receive the shovel-blades Kand K respectively, fastened by bolts to the said extensions. A

It will be seen that the blades K extend in an upward direction, asshown in Fig. 1, and obliquely across the tube P, while the other bladesK extend downwardly but in a like oblique direction to the blades K Nowit is understood that when a traveling motion is given to the carriage Fthe said shovel-blades K and lKTlllOVG through the compartments of thefurnaces A and A, with the blades K in action to move the materialforward and agitate the same. lVhen, however, the carriage F moves fromthis tier of compartments to the next lower one,as described in theapplication, Serial No. 498, 921, above referred to, then the positionof the blades K and K becomes reversed, that is, the blades K will thenbe in a lowermost position to act on the material contained in thesecond tier of furnace-compartments,while the other blades K are on topand are inactive. I l

The coupling I is formed with a longitudinal opening I, registering witha similar central opening F in the carriage-plate F or F so that coldair can pass fronrthe outside, thatis, from the space between the twofurnaces, into the tube P to keep the latter comparatively cool. .Thereduced part;0r neck I of each coupling for thefurnaces 'A and A" isadapted to pass. through a ,narrowslot formedby the opposite edges ofthe angleplates N and N, used-for closing thegreater portion of theinner sides of the compartments, so as to prevent air from passing intothe interior of-the compartments, The angular plate N is supported onthe I-beam B,

while the angularplate N depends from an I-beam O, fastened bybrackets Qto the main beamC located opposite and above the main beam G, carryingthe I-beams B and B. i

Now it will be seen that when the endless chains Giareset in motion thecarriage F is pulledvalong betweenthe two furnaces A and A, with itswheelsE .and E traveling on the rails D and D; The :tubes or supports P,projecting from the ends of the carriage F, extend into the compartmentsof the furnaces and by their .correspondin g shovel-blades-K- or Kagitate and push forward the material contained in the saidcompartments. t Having thus described my invention, I claim new anddesireto secure by Letters Paten1; .i. 1;, i it 1. -A stirring devicefor calcining-furnaces, comprising a carriage, connecting platesthereon,itwo shovel'carrying supports parallel to each other andsecuredat their ends to said conn ecting-plates, pins secured'at each end ofthe connecting-plates, a traveling wheel mounted on eachpin, and clampssecured close to theends of eachsupport' and adapted to receiveconnectingvchains, substantially as described. a a i l a l l 2. Thecombination of the carriage, the supporttsecured thereto, the clamp onthe support provided with flanges surrounding the support and disposedobliquely in rela-- tion thereto, and shovel-blades secured to thesaidflanges, substantially as described.

3. A stirring device, comprising a-hollow tubeextendin g across thehearth of the fur ,beingangularly reduced from the square'end onopposite sides toward the center thereof,

making an elongated neck, and said neck again increasing in thicknessand decreasing in width, to form a circular hub at its other end, saidhub having an external screwthread, in combination with a hollow tubehaving metal clamps with projecting flanges disposed obliquelyandsurrounding said tube and secured to' sameand shovel-blades l secured tosaid flanges, said tube also having an external screw-thread at oneend',and an interiorly-screw-threaded sleeve for connecting the said tube to"the said hub, substantially as describedw' a i a 5. In a stirringdevice for calciningfurnaces, the combination of the carriagewvith thetwo parallel bars secured together at their ends by connecting-plateshavingpins'in said pins, reduced necked couplings extend ing throughslots of the furnace at both ends of carriage, and secured to theconnectingplates, and hollowshovel-bearing tubes extending over hearthsand secured to hubs of said couplings, substantially as described.

b. The combination of two parallel furnaces separated by an open spaceand having two or more hearths overeach other, and slotted side walls toeach hearth, tracks arranged in the open space between said furnaces-acarriage provided with two parallel bars or rods andconnecting-plateswhereby the ends of the: said plates are securedtogether, wheels mounted on pins at the ends of said'plates to engagewith said tracks, hollow shovel-bear ing tubes secured to saidconnection-plates and extending through said slots at each end of l thecarriage, two endless chains passing their ends and traveling wheelsrotating on through said open space, parted and secured close to bothends of, each bar or rod of the carriage by clamps with 'flat linkconnecting the two clamps between the bars or rods, said chains,-clampsandbars or rods being adapted to turn over grooved wheels situated atthe ends of the furnace, andconstructed to be rotated by suitablemechanism substantially asdescribed- 1 l i ARTHUR nAnv lr wartn\Vitnesses: 7

WILLIAM II HENRY, ADAM UNnuRwoon;

